cheeky vs head-on

cheeky

adj
  • Impudent; impertinent; impertinently bold, often in a way that is regarded as endearing or amusing. 

  • Poisonous (of animals such as snakes), dangerous, cunning, violent, potent. 

  • Indulged in. 

  • (of swimwear, underwear, etc.) tending to reveal the cheeks of the buttocks. 

head-on

adj
  • Direct, abrupt, blunt or unequivocal; not prevaricating. 

  • Of a collision, from the front or in the direction of motion. 

adv
  • With the front of a vehicle. 

  • With direct confrontation. 

noun
  • A collision from the front. 

How often have the words cheeky and head-on occurred in a corpus of books? (source: Google Ngram Viewer )